Device for stopping drawing frames coiling two slivers in one can



May 24, 1966 E. BAKHAREV ETAL DEVICE STOPPING DRAWING FR S COIL ERS TWO SLIV IN ONE C 'led Sept. 6, 1963 United States Patent Office 3,252,185 Patented May 24, 1966 3,252,185 DEVICE FOR STOPPING DRAWING FRAMES COILING TWO SLIVERS 1N ONE CAN Eduard Valentinovich Bakharev, Barnaul, and Vladimir Semenovich Goloohev, Leningrad, U.S.S.R., assignors to Barnauljsky Nauchno-Issledovatelsky Institute Textilnoi Promyshlennosti Fiied Sept. 6, 1963, Ser. No. 307,138 2 Claims. (Cl. 19-.25)

'Ihis invention relates to textile machinery, and more particularly to an electrically driven drawing frame, including means for stopping the frame in the event of 'breakage of one of the slivers passing therethrough.

Drawing frames incorporating stop means operable upon the breakage of a sliver lhave heretofore been proposed and utilized, but these stop mechanisms have involved the use of 'complex linkages which have proven unreliable in operation, and which have also been dicult to maintain.

It is accordingly an object of this invention to provide an electrically driven drawing frame including means for stopping the frame in the event of breakage of a sliver, such means including a relatively simple electrical control circuit for the drive means, together with contacts operable upon breakage of a sliver for actuating the control circuit.

A further object of the invention is the provision of an electrically driven drawing frame including a plate mounted for longitudinal movement on a pair of calender rolls, together with a trumpet carried by the plate for movement therewith, the slivers passing through the trumpet, and upon breakage of one of the slivers the other serves to move the plate longitudinally and close the electrical circuit for stopping the frame drive.

Further objects and advantages of the invention will be apparent from the following description taken in conjunction with the accompany drawing, wherein:

FIG. l is a longitudinal sectional view on the line 1 1 of FIG. 2, and showing a drawing frame constructed in accordance with this invention;

vFIG. 2, a sectional view on the line 2 2 of FIG. l;

FIG. 3, a top plan view of the structure shown in FIG. l; and

FIG. 4, a diagrammatic View showing a drive motor and conventional control circuit.

With continued reference to the drawing, there is shown an electrically driven drawing frame constructed in accordance with this invention, and which comprises a plate 1 having a layer 1 of insulating material on the lower surface thereof, and which insulating material serves to slidably support the plate 1 on a pair of parallel, calender rolls 2, with the plate 1 being capable of sliding movement longitudinally of the rolls 2.

A trumpet 3 is fixed to the plate 1 for movement there- |with, and a central aperture in the trumpet 3 is in alignment with an aperture 3 in the insulating material 1', with the result that slivers may pass through the trumpet and aperture 3 and between the calender rolls 2. Feeding means for two slivers are provided in the form of individual spaced condensers 4 and 4', these condensers .being so located as to feed two slivers through the trumpet 3 at diametrically opposite locations in substantially longitudinal alignment with the major axis of the plate 1l Fixed electrical contacts 5 and 5 are disposed at opposite ends of the plate 1 in spaced relation thereto, and the contacts 5 and 5 are connected to one side of a control circuit for the electrical drive means of the drawing frame. The other side of the control circuit is connected to the plate 1, as clearly shown in FIG. 1.

In FIG. 4 there is shown -a drive motor for the drawing the frame and a conventional control circuit for such motor. The control circuit may well comprise a normally closed relay 1v1 having a movable contact 12 connected to one side 13 of a power source and with the movable contact `12 normally engaging a iixed contact :14 connected to the motor 10. The opposite side 15 of the power source is also connected to the motor 10 whereby with the relay 1!1 de-energized the motor 10 will be in operation. One side of the coil 16 of the relay 11 is connected to the contacts 5 and 5' and the opposite side of the coil 16 is connected through a battery 17 or other suitable power source with the plate 1. Consequently, upon movement of the plate 1 in either direction to engage the'contact y5 or the contact 5 will operate to energize the coil 16 of the relay 1-1 thereby moving the contact 12 away from the fixed contact 14 and opening the circuit to the motor 10 which will cause such motor 10 to stop, thereby stopping operation of the drawing frame.

The above described motor control circuit is entirely conventional in nature and obviously, other equivalent control circuits may be substituted therefor.

In operation and with two slivers passing from the condensers 4 and 4' through the trumpet 3 and between the calender rolls 2, the plate 1 will be positioned substantially as shown in CFIG. l, in spaced relations-hip to ,both of the contacts 5 and 5. In the event of breakage of one of the slivers, the unbroken sliver will serve to exert a pull on the plate 1, which will move the same longitudinally in the direction of the pull and cause the plate 1 to engage one or the other of the contacts 5 or 5 to thereby actuate the control circuit and stop the drawing frame.

It will be seen that by the above described invention there has been provided an extremely simple yet highly eicient stop means for a drawing frame which will operate to stop the frame in the event of breakage of either one of the two slivers passing through, and by reason of the mounting of the trumpet 3 directly on the movable plate 1 all complex linkage mechanisms have been dispensed with, and consequently maintenance problems have been reduced to a minimum.

It will be obvious to those skilled in the art that various changes may be made in the invention without departing from the spirit and scope thereof, and therefore the invention is not limited by that which is shown in the drawings and described in the specification, but only as indicated in the appended claims.

What we claim is:

1. An electrically driven drawing frame including aA pair of calender rolls for receiving slivers therebetween, a plate supported on said rolls for movement longitudinally thereof in either direction, a trumpet xed to said plate for movement therewith, said trumpet serving to guide slivers between said rolls, means for feeding two slivers through said trumpet and between said rolls, said feeding means being so arranged that one sliver exerts a force on said trumpet tending to move said plate in one direction and the other sliver exerts a force on said trum- -pet tending to move said plate in the opposite direction, a fixed electrical contact adjacent one end of said plate and a second iixed electrical contact adjacent the oppothe means for feeding two slivers includes a separate condenser for each sliver, said condensers being disposed above said trumpet and spaced longitudinally of said plate to direct the slivers into said trumpet at diametrically opposite points disposed longitudinally of said plate.

4 i References Cited by the Examiner FOREIGN PATENTS 5,1215 1903 Great Britain. 847,716 9/ 1960 Great Britain. 572,135 1/1958. Italy.

DONALD W. PARKER, Primary Examiner. 

1. AN ELECTRICALY DRIVEN DRAWING FRAME INCLUDING A PAIR OF CALENDER ROLLS FOR RECEIVING SLIVERS THEREBETWEEN, A PLATE SUPPORTED ON SAID ROLLS FOR MOVEMENT LONGITUDINALLY THEREOF IN EITHER DIRECTION, A TRUMPET FIXED TO SAID PLATE FOR MOVEMENT THEREWITH, SAID TRUMPET SERVING TO GUIDE SLIVERS BETWEEN SAID ROLLS, MEANS FOR FEEDING TWO SILVERS THROUGH SAID TRUMPET AND BETWEEN SAID ROLLS, SAID FEEDING MEANS BEING SO ARRANGED THAT ONE SLIVER EXERTS A FORCE ON SAID TRUMPET TENDING TO MOVE SAID PLATE IN ONE DIRECTION AND THE OTHER SLIVER EXERTS A FORCE ON SAID TRUMPET TENDING TO MOVE SAID PLATE IN THE OPPOSITE DIRECTION, A FIXED ELECTRICAL CONTRACT ADJACENT ONE END OF SAID PLATE AND A SECOND FIXED ELECTRICAL CONTACT ADJACENT THE OPPOSITE END OF SAID PLATE, A CONTROL CIRCUIT FOR THE ELECTRICAL FRAME DRIVING MEANS, ONE SIDE BEING CONNECTED TO SAID PLATE AND THE OTHER SIDE OF THE CONTROL CIRCUIT BEING CONNECTED TO SAID FIXED CONTACTS, WHEREBY UPON BREAKAGE OF EITHER SLIVER THE UNBROKEN SLIVER WILL MOVE SAID PLATE INTO ENGAGEMENT WITH ONE OF SAID CONTACTS TO ACTUATE THE CONTROL CIRCUITS FOR STOPPING THE FRAME DRIVING MEANS. 